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dc.contributor.authorChen, W. Q.zh_CN
dc.contributor.authorPoon, K. F.zh_CN
dc.contributor.authorLam, M. H. W.zh_CN
dc.contributor.author陈伟琪zh_CN
dc.date.accessioned2013-12-12T02:08:48Z
dc.date.available2013-12-12T02:08:48Z
dc.date.issued1998-12-01zh_CN
dc.identifier.citationEnvironmental Science & Technology, 1998,32(23):3816-3820zh_CN
dc.identifier.issn0013-936Xzh_CN
dc.identifier.otherWOS:000077282500044zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/60820
dc.description.abstractA SPME method for the determination of organophosphorus pesticide residues in a local food plant, Chrysanthemum coronarium, was established. Pesticide residues were extracted by SPME fiber (with 100 mu m poly(dimethylsiloxane) coating) from a biphasic water/plant tissues mixture and determined by GC-FPD. An equilibrium model was derived for the system and revealed that pesticide recoveries were related to the water:plant tissues ratio, f(r) and the partition coefficient, K(WV), for the distribution of pesticides between the aqueous phase and the plant tissues. The model was verified by four organophosphorus pesticides, namely phorate, diazinon, methyl parathion, and ethion. The best fitted K(WV) values (P < 0.05) for the pesticides were found to be 4.73 +/- 0.32 x 10(-2) (phorate); 1.11 +/- 0.10 x 10(-1) (diazinon); 9.18 +/- 0.95 x 10(-2) (methyl parathion); and 8.21 +/- 1.28 x 10(-3) (ethion). Remarkable correlation between the K(WV) of the organophosphorus pesticides and their octanol/water partition coefficients, K(OW), was also established.zh_CN
dc.language.isoen_USzh_CN
dc.source.urihttp://dx.doi.org/10.1021/es980294czh_CN
dc.subjectCHROMATOGRAPHIC DETERMINATIONzh_CN
dc.subjectGAS-CHROMATOGRAPHYzh_CN
dc.subjectWATERzh_CN
dc.subjectEXTRACTIONzh_CN
dc.subjectSAMPLESzh_CN
dc.subjectSPECTROMETRYzh_CN
dc.subjectINSECTICIDESzh_CN
dc.subjectENRICHMENTzh_CN
dc.subjectPRODUCTSzh_CN
dc.subjectFIBERSzh_CN
dc.titleThe application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plantzh_CN
dc.typeArticlezh_CN


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